docs: def getReturnPage(context, prior=False):
      '''
      This tag makes it easy to get return links from within a template without
      requiring custom logic inside the view.  Just include
      {% getReturnPage as returnPage %} and then reference {{ returnPage.url }}
      and {{ returnPage.title }} as needed.
      '''
      siteHistory = getattr(context.get('request',None),'session',{}).get('SITE_HISTORY',{})
      return returnPageHelper(siteHistory,prior=prior)